GAE app not recognizing backends.yaml

I have a GAE app which is deployed and has other functional config
files such as cron.yaml, queue.yaml. However, even though I have
defined a backends.yaml, and uploaded this version to GAE, the admin
console is not showing it, and I'm getting this message:

"You have not created any backends for this application."

Even dev_appserver is showing this same message. Here is my
backends.yaml file: